Donat Roy Mittoo (3 March 1948 – 16 December 1990), better known as Jackie Mittoo, was a Jamaican- Canadian keyboardist, songwriter and musical director. He was a member of The Skatalites and musical director of the Studio One record label.[1]

In the 1960s he was a member of The Skatalites, The Sheiks, The Soul Brothers, The Soul Vendors and Sound Dimension. Mittoo's compositions in this period included "Darker Shade of Black", "Feel Like Jumping", and "Baby Why". He played with Lloyd "Matador" Daley in 1968 and 1969.

He emigrated to Toronto, Ontario, Canada at the end of the 1960s. There he recorded three albums, Wishbone (Summus), Reggae Magic (CTL) and Let's Put It All Together (CTL). He also set up the Stine-Jac record label, as well as running a record store.

In 1970, his song "Peanie Wallie" was reworked into a song called "Duppy Conqueror" and recorded by The Wailers.[1] Mittoo's song Wishbone was a hit in 1971. He performed in local Toronto lounges throughout the 1970s. Mittoo assisted Toronto-area reggae musicians, including Earth, Roots and Water, Esso Jaxxon (R. Zee Jackson), Carl Harvey, Lord Tanamo, Boyo Hammond, Carl Otway, The Sattalites, Jackie James and Jason Wilson. Mittoo continued to record for Jamaican producers in the 1970s, mostly Bunny Lee.[2] He co-wrote "Armagideon Time" (later recorded by The Clash) with Willi Williams, released in 1980.

In the 1980s, he often worked with Sugar Minott. In 1985 he travelled to Ghana with British band Musical Youth, and while there recorded tracks that would later be released on the album Jackie Mittoo in Africa.[3] In 1989, he briefly rejoined The Skatalites, but left when his health started to deteriorate. In 1989 and 1990 he recorded Wild Jockey for Lloyd Barnes' Wackies label.